-54.98% is the change from 311 to 140
Calculation steps:
[( 140 - 311 ) ÷ 311] x 100 = -54.98%
Formula
Percentage change = [(140 - 311) / 311] x 100
Subtract the new number by the original number
140 - 311 = -171
-171 ÷ 311 = -0.5498392282958199
-0.5498392282958199 x 100 = -54.98%